[Bug 28229] New: Radeon driver not detecting HDMI monitor correctly when using KMS

[Bug 28229] New: Radeon driver not detecting HDMI monitor correctly when using KMS

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=28229

           Summary: Radeon driver not detecting HDMI monitor correctly
                    when using KMS
           Product: DRI
           Version: XOrg CVS
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/Radeon
        AssignedTo: dri-devel@lists.freedesktop.org
        ReportedBy: magnus@jensenligan.se




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[Bug 28229] Radeon driver not detecting HDMI monitor correctly when using KMS

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https://bugs.freedesktop.org/show_bug.cgi?id=28229

--- Comment #1 from Magnus Jensen <magnus@jensenligan.se> 2010-05-24 04:47:24 PDT ---
Created an attachment (id=35821)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=35821)
Xorg.0.log

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[Bug 28229] Radeon driver not detecting HDMI monitor correctly when using KMS

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https://bugs.freedesktop.org/show_bug.cgi?id=28229

Magnus Jensen <magnus@jensenligan.se> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #35821|Xorg.0.log                  |Xorg.0.log-with UMS
        description|                            |

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[Bug 28229] Radeon driver not detecting HDMI monitor correctly when using KMS

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https://bugs.freedesktop.org/show_bug.cgi?id=28229

--- Comment #2 from Magnus Jensen <magnus@jensenligan.se> 2010-05-24 04:50:17 PDT ---
When loading radeon module with modeset=1
the dmesg gets flooded with:

[drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainder is 255
[drm:drm_edid_block_valid] *ERROR* Raw EDID:
<3>02 03 20 f1 4c 05 04 03 14 93 12 01 02 11 15 16  .. .L...........
<3>1e 23 09 07 07 83 01 00 00 66 03 0c 00 10 00 80  .#.......f......
<3>00 1d 00 bc 52 d0 1e 20 b8 28 55 40 bd fa 10 00  ....R.. .(U@....
<3>00 1e 01 1d 80 18 71 1c 16 20 58 2c 25 00 bd fa  ......q.. X,%...
<3>10 00 00 9e 8c 0a d0 8a 20 e0 2d 10 10 3e 96 00  ........ .-..>..
<3>bd fa 10 00 00 18 01 1d 80 d0 72 1c 16 20 10 2c  ..........r.. .,
<3>25 80 bd fa 10 00 00 9e 01 1d 00 bc 52 d0 1e 20  %...........R.. 
<3>b8 28 55 40 bd fa 10 00 00 1e 00 00 00 00 00 a2  .(U@............

the drmradeonfb also sets a lower resolution than normal (1024x768)

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[Bug 28229] Radeon driver not detecting HDMI monitor correctly when using KMS

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https://bugs.freedesktop.org/show_bug.cgi?id=28229

--- Comment #3 from Magnus Jensen <magnus@jensenligan.se> 2010-05-24 04:54:39 PDT ---
Created an attachment (id=35822)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=35822)
Xorg.0.log - with KMS

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[Bug 28229] Radeon driver not detecting HDMI monitor correctly when using KMS

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https://bugs.freedesktop.org/show_bug.cgi?id=28229

--- Comment #4 from Magnus Jensen <magnus@jensenligan.se> 2010-05-24 04:56:14 PDT ---
Created an attachment (id=35823)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=35823)
dmesg-current

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[Bug 28229] Radeon driver not detecting HDMI monitor correctly when using KMS

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https://bugs.freedesktop.org/show_bug.cgi?id=28229

Magnus Jensen <magnus@jensenligan.se> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #35822|application/octet-stream    |text/plain
          mime type|                            |

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[Bug 28229] Radeon driver not detecting HDMI monitor correctly when using KMS

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https://bugs.freedesktop.org/show_bug.cgi?id=28229

Magnus Jensen <magnus@jensenligan.se> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #35823|application/octet-stream    |text/plain
          mime type|                            |

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[Bug 28229] Radeon driver not detecting HDMI monitor correctly when using KMS

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https://bugs.freedesktop.org/show_bug.cgi?id=28229

--- Comment #5 from Magnus Jensen <magnus@jensenligan.se> 2010-05-24 05:01:56 PDT ---
Created an attachment (id=35824)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=35824)
dmesg-boot

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[Bug 28229] Radeon driver not detecting HDMI monitor correctly when using KMS

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https://bugs.freedesktop.org/show_bug.cgi?id=28229

Magnus Jensen <magnus@jensenligan.se> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|XOrg CVS                    |unspecified

--- Comment #6 from Magnus Jensen <magnus@jensenligan.se> 2010-05-24 06:02:23 PDT ---
I should add that i'm trying drm-radeon-testing from git repository
and i have also tried compiling latest 2.6.34 git from kernel.org.

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[Bug 28229] Radeon driver not detecting HDMI monitor correctly when using KMS

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https://bugs.freedesktop.org/show_bug.cgi?id=28229

--- Comment #7 from ajax at nwnk dot net <ajax@nwnk.net> 2010-05-24 06:46:51 PDT ---
Just to make it clear what's going on here: the CEA extension block really does
have a broken checksum, although it looks correct otherwise.

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[Bug 28229] Radeon driver not detecting HDMI monitor correctly when using KMS

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https://bugs.freedesktop.org/show_bug.cgi?id=28229

--- Comment #8 from Magnus Jensen <magnus@jensenligan.se> 2010-05-24 08:25:54 PDT ---
so i guess it's not a bug then, but isn't there any way to circumvent the
problem, other that flashing a new edid or buying a new tv?
(b.t.w i managed to get correct screen resolution in X by using CustomEDID
option in xorg.conf with an edid bin i grabbed using 2.6.33.3 kernel, but only
if i load X before module, but then i still get no HDMI audio because
xf86-video-ati doesn't get the modesetting)

What i thought was strange was that it doesn't react this way on stock 2.6.33.3
kernel. On that kernel HDMI works beautifully with audio.
 i am pretty sure i compiled the kernel correctly.

So i think it may be a regression (or rather progression since my EDID seems to
 really be broken) that causes trouble for me with the drm driver.

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[Bug 28229] Radeon driver not detecting HDMI monitor correctly when using KMS

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https://bugs.freedesktop.org/show_bug.cgi?id=28229

--- Comment #9 from Alex Deucher <agd5f@yahoo.com> 2010-05-24 08:26:51 PDT ---
Should we add a quirk for this particular monitor or add some logic to use
edids with faulty checksums?  It would probably be better to attempt to use an
edid than to not, at least for digital monitors.

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[Bug 28229] Radeon driver not detecting HDMI monitor correctly when using KMS

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https://bugs.freedesktop.org/show_bug.cgi?id=28229

--- Comment #10 from Magnus Jensen <magnus@jensenligan.se> 2010-05-24 09:26:47 PDT ---
sorry i meant to say 2.6.33.4 that's the stock kernel in slackware64-current

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[Bug 28229] Radeon driver not detecting HDMI monitor correctly when using KMS

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https://bugs.freedesktop.org/show_bug.cgi?id=28229

--- Comment #11 from Christian König <deathsimple@vodafone.de> 2010-05-24 16:26:09 PDT ---
Invalid checksums on CEA extension is a problem I have found on a couple of A/V
receivers + TV combinations. The A/V receivers usually try to update the audio
infos and CEC physical address in the CEA extension, but sometimes fails to
recalculate the checksum of the block.

I would suggest to lower the error to a simple warning and try to use the infos
in the extension block anyway.

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[Bug 28229] Radeon driver not detecting HDMI monitor correctly when using KMS

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https://bugs.freedesktop.org/show_bug.cgi?id=28229

--- Comment #12 from Magnus Jensen <magnus@jensenligan.se> 2010-05-24 16:38:28 PDT ---
Created an attachment (id=35839)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=35839)
edid from "/sys/class/drm/card0-HDMI Type A-1/"

This is the edid it sees when booting with Linux kernel 2.6.33.4.

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[Bug 28229] Radeon driver not detecting HDMI monitor correctly when using KMS

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https://bugs.freedesktop.org/show_bug.cgi?id=28229

Alex Deucher <agd5f@yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED

--- Comment #13 from Alex Deucher <agd5f@yahoo.com> 2010-05-25 21:55:03 PDT ---
fixed here:
http://git.kernel.org/?p=linux/kernel/git/airlied/drm-2.6.git;a=commitdiff;h=4a638b4e38234233f5c7e6705662fbc0b58d80c2

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[Bug 28229] Radeon driver not detecting HDMI monitor correctly when using KMS

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--- Comment #14 from Magnus Jensen <magnus@jensenligan.se> 2010-05-26 03:07:49 PDT ---
Yes that works for me. Now gets the correct output HDMI-0 not VGA, i don't have
any 3d anymore though that's a different story...

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[Bug 28229] Radeon driver not detecting HDMI monitor correctly when using KMS

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https://bugs.freedesktop.org/show_bug.cgi?id=28229

--- Comment #15 from Magnus Jensen <magnus@jensenligan.se> 2010-05-26 03:11:24 PDT ---
Created an attachment (id=35862)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=35862)
dmesg after fix patch

Just wanted u to know that dmesg still get's a lot of these error messages

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[Bug 28229] Radeon driver not detecting HDMI monitor correctly when using KMS

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--- Comment #16 from Magnus Jensen <magnus@jensenligan.se> 2010-05-26 08:03:45 PDT ---
Thank you! the fix works perfect AFAI can see. I had to apply it manually in
the drm-radeon-testing tree since something breaks 3D and XV for me in the
d-r-n branch.
but now HDMI picture,audio and 3d is working perfectly for me, using d-r-t
branch
with patch applied.

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[Bug 28229] Radeon driver not detecting HDMI monitor correctly when using KMS

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https://bugs.freedesktop.org/show_bug.cgi?id=28229

--- Comment #17 from Alex Deucher <agd5f@yahoo.com> 2010-05-26 08:09:23 PDT ---
(In reply to comment #16)
> Thank you! the fix works perfect AFAI can see. I had to apply it manually in
> the drm-radeon-testing tree since something breaks 3D and XV for me in the
> d-r-n branch.
> but now HDMI picture,audio and 3d is working perfectly for me, using d-r-t
> branch
> with patch applied.

You need this patch if you are using the drm-next branch:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=4fa07bf146aaee1e8409d35ab08624041c2e3867

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